This is a double-blind, placebo-controlled crossover study of adult asthmatics given minocycline 150 mg po BID or placebo as add-on therapy for eight weeks each. Each eight week arm is separated by a four week wash-out. Spirometry is performed at the baseline and end of each arm. Daily symptoms scores, peak flow rates, and oral steroid requirements are recorded. A standardized asthma quality of life symptoms assessment is made every four weeks (AQLQ, Juniper).
